From ab849f796bdc17236a95ea5fe5c166fb8f24a75c Mon Sep 17 00:00:00 2001
From: sws <15810472099@163.com>
Date: 星期六, 26 十一月 2022 16:12:02 +0800
Subject: [PATCH] 1
---
src/main/java/com/lf/server/helper/StringHelper.java | 191 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 191 insertions(+), 0 deletions(-)
diff --git a/src/main/java/com/lf/server/helper/StringHelper.java b/src/main/java/com/lf/server/helper/StringHelper.java
new file mode 100644
index 0000000..5b4a6b6
--- /dev/null
+++ b/src/main/java/com/lf/server/helper/StringHelper.java
@@ -0,0 +1,191 @@
+package com.lf.server.helper;
+
+import com.lf.server.entity.all.StaticData;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 瀛楃涓插府鍔╃被
+ * @author WWW
+ */
+public class StringHelper {
+ /**
+ * 鏁板瓧姝ｅ垯
+ */
+ public static final Pattern NUMBER_PATTERN = Pattern.compile("-?\\d+(\\.\\d+)?");
+
+ /**
+ * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 1
+ */
+ public static final SimpleDateFormat YMD_FORMAT = new SimpleDateFormat("yyyy-MM-dd");
+
+ /**
+ * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 2
+ */
+ public static final SimpleDateFormat YMDHMS_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+
+ /**
+ * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 3
+ */
+ public static final SimpleDateFormat YMD2_FORMAT = new SimpleDateFormat("yyyyMMdd");
+
+ /**
+ * 鏍煎紡鍖栧綋鍓嶇郴缁熸棩鏈� 4
+ */
+ public static final SimpleDateFormat YMDHMS2_FORMAT = new SimpleDateFormat("yyyyMMddHHmmss");
+
+ /**
+ * 鍒ゆ柇瀛楃涓�,鏄惁涓烘暣鏁�
+ */
+ public static boolean isInteger(String str) {
+ return str != null && str.matches("[0-9]+");
+ }
+
+ /**
+ * 鍒ゆ柇瀛楃涓�,鏄惁涓烘诞鐐规暟
+ */
+ public static boolean isNumeric(String str) {
+ return str != null && str.matches("-?\\d+(\\.\\d+)?");
+ }
+
+ /**
+ * 鍒ゆ柇瀛楃涓�,鏄惁涓烘诞鐐规暟
+ */
+ public static boolean isNumeric2(String str) {
+ return str != null && NUMBER_PATTERN.matcher(str).matches();
+ }
+
+ /**
+ * 鏃ユ湡姝ｅ垯
+ */
+ public static Pattern datePattern = Pattern.compile("^((\\d{2}(([02468][048])|([13579][26]))[\\-\\/]((((0?[13578])|(1[02]))[\\-\\/]((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/]((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/]((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/]((((0?[13578])|(1[02]))[\\-\\/]((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/]((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/]((0?[1-9])|(1[0-9])|(2[0-8]))))))(\\s(((0?[0-9])|([1-2][0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$");
+
+ /**
+ * SQL姝ｅ垯
+ */
+ public static Pattern sqlPattern = Pattern.compile("|and|exec|execute|insert|select|delete|update|count|drop|\\*|%|chr|mid|master|truncate|char|declare|sitename|net user|xp_cmdshell|;|or|-|\\+|,|like");
+
+ /**
+ * 瀛楃涓茶浆涓烘棩鏈�
+ */
+ public static Date parseDate(String str) {
+ try {
+ return YMD_FORMAT.parse(str);
+ } catch (Exception ex) {
+ return null;
+ }
+ }
+
+ /**
+ * 瀛楃涓茶浆涓烘棩鏈熸椂闂�
+ */
+ public static Date parseTime(String str) {
+ try {
+ return YMDHMS_FORMAT.parse(str);
+ } catch (Exception e) {
+ return null;
+ }
+ }
+
+ /**
+ * 鍒ゆ柇鍊兼槸鍚︿负鏃ユ湡鏍煎紡
+ */
+ public static boolean isDate(String strDate) {
+ Matcher m = datePattern.matcher(strDate);
+
+ return m.matches();
+ }
+
+ /**
+ * 瀛楃涓诧紝鏄惁涓簄ull 鎴� ""
+ */
+ public static boolean isNull(String str) {
+ return null == str || str.length() == 0;
+ }
+
+ /**
+ * 瀛楃涓�,鏄惁涓虹┖null鍜岀┖鏍�
+ */
+ public static boolean isEmpty(String str) {
+ return null == str || "".equals(str.trim());
+ }
+
+ /**
+ * 鑾峰彇 like 瀛楃涓�
+ */
+ public static String getLikeStr(String str) {
+ return StringHelper.isEmpty(str) ? null : "%" + str.trim() + "%";
+ }
+
+ /**
+ * 鑾峰彇 like 瀛楃涓�-2
+ */
+ public static String getLikeStr2(String str) {
+ return StringHelper.isEmpty(str) ? "%" : "%" + str.trim() + "%";
+ }
+
+ /**
+ * 棣栧瓧姣嶅ぇ鍐�
+ */
+ public static String firstCharToUpperCase(String str) {
+ return str.substring(0, 1).toUpperCase() + str.substring(1);
+ }
+
+ /**
+ * 棣栧瓧姣嶅皬鍐�
+ */
+ public static String firstCharToLowerCase(String str) {
+ return str.substring(0, 1).toLowerCase() + str.substring(1);
+ }
+
+ /**
+ * 鍒ゆ柇鍊兼槸鍚﹀瓨鍦⊿QL娉ㄥ叆
+ *
+ * @param str 瀛楃涓�
+ * @return 鏄�/鍚�
+ */
+ public static boolean isSqlInjection(String str) {
+ Matcher m = sqlPattern.matcher(str);
+
+ return m.matches();
+ }
+
+ /**
+ * 鏍￠獙瀵嗙爜鏄�/鍚﹀悎娉�
+ *
+ * @param pwd 瀵嗙爜
+ * @return 鏄�/鍚﹀悎娉�
+ */
+ public static boolean checkPwdValid(String pwd) {
+ return Pattern.matches(StaticData.PWD_REG, pwd);
+ }
+
+ /**
+ * 杩炴帴List闆嗗悎
+ * @param list 鏁存暟闆嗗悎
+ * @param join 杩炴帴瀛楃
+ * @return
+ */
+ public static String join(List<Integer> list, String join) {
+ if (null == list || list.isEmpty()) {
+ return "";
+ }
+
+ StringBuilder sb = new StringBuilder();
+ for (Integer i : list) {
+ if (null != i) {
+ sb.append(i.toString() + join);
+ }
+ }
+
+ if (sb.length() > 0 && sb.lastIndexOf(join) == sb.length() - 1) {
+ sb.deleteCharAt(sb.length() -1 );
+ }
+
+ return sb.toString();
+ }
+}
--
Gitblit v1.9.3